OPTIMUM COMBINED SERVICES LTD
Specialists
SIC: 43310, 43330, 43341
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Guides & resources
Barratt Redrow PLC: A First Full Year as a Combined Group
Full year results for the 52 week period ended 29 June 2025 Barratt Redrow PLC reported its maiden full set of annual results as a merged business on 17 September 2025, covering the 52 week period …
Read guideAI for Building Services (M&E) Engineers: A Free CPD Course
A free, self-paced course for building-services and M&E engineers on using AI across loads and calculations, coordination, energy modelling, specification and documentation — with the rigour that safety-critical systems demand.
Read guideInside SIC 71111: UK Architecture's Record Year That Most Practices Missed
Key findings from the Construct365 Sector Intelligence Report on SIC 71111 — architectural activities: an ~£8.6bn profession where chartered-practice revenue jumped 24% to a record £5bn while firms of 1–4 staff stood still, 78% of practices earn 13% of the money, fee scales are banned by competition law, and the institute's own free calculator settles the product-fit question.
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